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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/fonts/font.h"
#include "cc/paint/paint_flags.h"
#include "third_party/blink/renderer/platform/fonts/font_variant_emoji.h"
#include "third_party/blink/renderer/platform/fonts/shaping/harfbuzz_shaper.h"
#include "third_party/blink/renderer/platform/fonts/shaping/shape_result_view.h"
#include "third_party/blink/renderer/platform/fonts/text_fragment_paint_info.h"
#include "third_party/blink/renderer/platform/testing/font_test_base.h"
#include "third_party/blink/renderer/platform/testing/font_test_helpers.h"
#include "third_party/blink/renderer/platform/testing/runtime_enabled_features_test_helpers.h"
#include "third_party/blink/renderer/platform/testing/unit_test_helpers.h"
#include "third_party/blink/renderer/platform/text/tab_size.h"
#include "third_party/blink/renderer/platform/text/text_direction.h"
#include "third_party/blink/renderer/platform/wtf/text/string_view.h"
using blink::test::CreateTestFont;
namespace blink {
namespace {
Font* CreateVerticalUprightTestFont(const AtomicString& family_name,
const String& font_path,
float size) {
return CreateTestFont(
family_name, font_path, size, /* ligatures */ nullptr,
kNormalVariantEmoji, [](FontDescription* font_description) {
font_description->SetOrientation(FontOrientation::kVerticalUpright);
});
}
} // namespace
class FontTest : public FontTestBase {
public:
Font* CreateFontWithOrientation(const Font* base_font,
FontOrientation orientation) {
FontDescription font_description = base_font->GetFontDescription();
font_description.SetOrientation(orientation);
return MakeGarbageCollected<Font>(font_description);
}
};
TEST_F(FontTest, FonteMetricsCapHeight) {
const auto cap_height_of = [](const char* font_path, float size) {
Font* font = CreateTestFont(AtomicString("test"),
test::PlatformTestDataPath(font_path), size);
const SimpleFontData* const font_data = font->PrimaryFont();
return font_data->GetFontMetrics().CapHeight();
};
EXPECT_FLOAT_EQ(80.0f, cap_height_of("Ahem.woff", 100));
EXPECT_FLOAT_EQ(160.0f, cap_height_of("Ahem.woff", 200));
#if BUILDFLAG(IS_WIN)
EXPECT_FLOAT_EQ(
70.9961f, cap_height_of("third_party/Roboto/roboto-regular.woff2", 100));
EXPECT_FLOAT_EQ(
141.99219f,
cap_height_of("third_party/Roboto/roboto-regular.woff2", 200));
#else
EXPECT_FLOAT_EQ(
71.09375f, cap_height_of("third_party/Roboto/roboto-regular.woff2", 100));
EXPECT_FLOAT_EQ(
142.1875f, cap_height_of("third_party/Roboto/roboto-regular.woff2", 200));
#endif
}
TEST_F(FontTest, ConvertBaseline) {
Font* font = test::CreateAhemFont(100);
const SimpleFontData* font_data = font->PrimaryFont();
const FontMetrics& metrics = font_data->GetFontMetrics();
EXPECT_EQ(metrics.FixedAscent(), 80);
EXPECT_EQ(metrics.FixedDescent(), 20);
EXPECT_EQ(metrics.FixedAlphabetic(FontBaseline::kAlphabeticBaseline), 0);
EXPECT_EQ(metrics.FixedAlphabetic(FontBaseline::kCentralBaseline), -30);
EXPECT_EQ(metrics.FixedCapHeight(FontBaseline::kAlphabeticBaseline), 80);
EXPECT_EQ(metrics.FixedCapHeight(FontBaseline::kCentralBaseline), 50);
}
TEST_F(FontTest, IdeographicFullWidthAhem) {
Font* font = CreateTestFont(AtomicString("Ahem"),
test::PlatformTestDataPath("Ahem.woff"), 16);
const SimpleFontData* font_data = font->PrimaryFont();
ASSERT_TRUE(font_data);
EXPECT_FALSE(font_data->IdeographicInlineSize().has_value());
}
TEST_F(FontTest, IdeographicFullWidthCjkFull) {
Font* font = CreateTestFont(
AtomicString("M PLUS 1p"),
blink::test::BlinkWebTestsFontsTestDataPath("mplus-1p-regular.woff"), 16);
const SimpleFontData* font_data = font->PrimaryFont();
ASSERT_TRUE(font_data);
EXPECT_TRUE(font_data->IdeographicInlineSize().has_value());
EXPECT_EQ(*font_data->IdeographicInlineSize(), 16);
}
TEST_F(FontTest, IdeographicFullWidthCjkNarrow) {
ScopedNoFontAntialiasingForTest disable_no_font_antialiasing_for_test(false);
Font* font = CreateTestFont(AtomicString("CSSHWOrientationTest"),
blink::test::BlinkWebTestsFontsTestDataPath(
"adobe-fonts/CSSHWOrientationTest.otf"),
16);
const SimpleFontData* font_data = font->PrimaryFont();
ASSERT_TRUE(font_data);
EXPECT_TRUE(font_data->IdeographicInlineSize().has_value());
EXPECT_FLOAT_EQ(*font_data->IdeographicInlineSize(), 8.0f);
}
// A font that does not have the CJK "water" glyph.
TEST_F(FontTest, IdeographicFullWidthUprightAhem) {
Font* font = CreateTestFont(AtomicString("Ahem"),
test::PlatformTestDataPath("Ahem.woff"), 16);
const SimpleFontData* font_data = font->PrimaryFont();
ASSERT_TRUE(font_data);
EXPECT_FALSE(font_data->IdeographicInlineSize().has_value());
}
// A Japanese font, with the "water" glyph, but the `vmtx` table is missing.
TEST_F(FontTest, IdeographicFullWidthUprightCjkNoVmtx) {
Font* font = CreateVerticalUprightTestFont(
AtomicString("M PLUS 1p"),
blink::test::BlinkWebTestsFontsTestDataPath("mplus-1p-regular.woff"), 16);
const SimpleFontData* font_data = font->PrimaryFont();
ASSERT_TRUE(font_data);
// If the `vmtx` table is missing, the vertical advance should be synthesized.
ASSERT_TRUE(font_data->IdeographicInlineSize().has_value());
EXPECT_EQ(*font_data->IdeographicInlineSize(),
font_data->GetFontMetrics().Height());
}
// A Japanese font, with the "water" glyph, with the `vmtx` table.
TEST_F(FontTest, IdeographicFullWidthUprightCjkVmtx) {
Font* font =
CreateVerticalUprightTestFont(AtomicString("CSSHWOrientationTest"),
blink::test::BlinkWebTestsFontsTestDataPath(
"adobe-fonts/CSSHWOrientationTest.otf"),
16);
const SimpleFontData* font_data = font->PrimaryFont();
ASSERT_TRUE(font_data);
ASSERT_TRUE(font_data->IdeographicInlineSize().has_value());
EXPECT_EQ(*font_data->IdeographicInlineSize(), 16);
}
TEST_F(FontTest, TextIntercepts) {
Font* font = CreateTestFont(AtomicString("Ahem"),
test::PlatformTestDataPath("Ahem.woff"), 16);
// A sequence of LATIN CAPITAL LETTER E WITH ACUTE and LATIN SMALL LETTER P
// characters. E ACUTES are squares above the baseline in Ahem, while p's
// are rectangles below the baseline.
UChar ahem_above_below_baseline_string[] = {0xc9, 0x70, 0xc9, 0x70, 0xc9,
0x70, 0xc9, 0x70, 0xc9};
String ahem_above_below_baseline{
base::span(ahem_above_below_baseline_string)};
ShapeResult* shape_result = HarfBuzzShaper(ahem_above_below_baseline)
.Shape(font, TextDirection::kLtr);
TextFragmentPaintInfo text_paint_info{ahem_above_below_baseline, 0,
ahem_above_below_baseline.length(),
ShapeResultView::Create(shape_result)};
cc::PaintFlags default_paint;
std::tuple<float, float> below_baseline_bounds = std::make_tuple(2, 4);
Vector<Font::TextIntercept> text_intercepts;
// 4 intercept ranges for below baseline p glyphs in the test string
font->GetTextIntercepts(text_paint_info, default_paint, below_baseline_bounds,
text_intercepts);
EXPECT_EQ(text_intercepts.size(), 4u);
for (auto text_intercept : text_intercepts) {
EXPECT_GT(text_intercept.end_, text_intercept.begin_);
}
std::tuple<float, float> above_baseline_bounds = std::make_tuple(-4, -2);
// 5 intercept ranges for the above baseline E ACUTE glyphs
font->GetTextIntercepts(text_paint_info, default_paint, above_baseline_bounds,
text_intercepts);
EXPECT_EQ(text_intercepts.size(), 5u);
for (auto text_intercept : text_intercepts) {
EXPECT_GT(text_intercept.end_, text_intercept.begin_);
}
}
TEST_F(FontTest, TabWidthZero) {
Font* font = CreateTestFont(AtomicString("Ahem"),
test::PlatformTestDataPath("Ahem.woff"), 0);
TabSize tab_size(8);
EXPECT_EQ(font->TabWidth(tab_size, .0f), .0f);
EXPECT_EQ(font->TabWidth(tab_size, LayoutUnit()), LayoutUnit());
}
TEST_F(FontTest, NullifyPrimaryFontForTesting) {
Font* font = CreateTestFont(AtomicString("Ahem"),
test::PlatformTestDataPath("Ahem.woff"), 0);
EXPECT_TRUE(font->PrimaryFont());
font->NullifyPrimaryFontForTesting();
EXPECT_FALSE(font->PrimaryFont());
}
} // namespace blink
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